First, set up the environment SpringMVC

1. Import jar package

Since seamless SpringMVC title Spring, directly into the jar package prior to the Spring Framework.

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4. The front-end controller

*.doAnd *.action: the request url to .do end or .action, SpringMVC will be parsed frame.
/ : All requests will be parsed pringmvc, can cause static resources can not access the support RestFul development style.
/* : Intercepts all requests, springmvc JSP will be resolved, resulting in can not access the JSP Do not use this approach.

If you do not use a browser to access the front controller configuration of xx.do, DispatcherServlet will not be intercepted, the equivalent of no use SpringMVC framework, will direct 404.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>SpringMVC01</display-name>
	<!-- 前端控制器 -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 加载SpringMVC配置文件 -->
		<init-param>
				<param-name>contextConfigLocation</param-name>
				<param-value>classpath:springmvc.xml</param-value>
		</init-param>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
</web-app>

3. Configure SpringMVC

Processor (handwriting).
Processor mapper. (The annotation mode, the processor and the mapper @Controller annotations match; @RequestMapper match the request url.)
Processor adapter. (Paired processor adapter processor mapper.)
View resolver.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop.xsd 
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx.xsd ">
	
	<!-- 处理器(手写) -->
	<bean class="com.gql.springmvc.UserController"></bean>
	
	<!-- 处理器映射器 -->
	<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
	
	
	<!-- 处理器适配器 -->
	<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>		
	
	
	<!-- 视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/>
	
</beans>

4. The processor handwritten

SpringMVC syntax compared with the servlet

SpringMVC	servlet
`mv.addObject("msg","hello world");`	`request.setAttribute("msg","hello word!");`
`mv.setViewName("index.jsp");`	`request.getRequestDispatcher(路径).forward(request,response);`

@RequestMapping ( "/ hello"): is matched url path.

package com.gql.springmvc;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
/**
 * 类说明:
 *		处理器
 * @guoqianliang1998.
 */
@Controller
public class UserController {
	
	@RequestMapping("/hello")
	public ModelAndView hello(){
		ModelAndView mv = new ModelAndView();
		mv.addObject("msg","hello world！");
		mv.setViewName("index.jsp");
		return mv;
	}
}

5. Jump page

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<html>
  <head>
	<meta http-equive="content-type" content="text/html,charset=utf-8"/>
  </head>
  
  <body>
    ${msg}
  </body>
</html>

After the success of open access tomcat:
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The first test was successful SpringMVC program.

Second, few details

1. The front controller loads the default path

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>SpringMVC01</display-name>
	<!-- 前端控制器 -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 加载SpringMVC配置文件 -->
		<init-param>
				<param-name>contextConfigLocation</param-name>
				<param-value>classpath:springmvc.xml</param-value>
		</init-param>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
</web-app>

The above front controller using a <init-param>标签specified path (classpath: springmvc.xml) loading springmvc.xmlfiles. If not specified, SpringMVC will go to look for a file called the WEB-INF directory "servlet-name"+"-servlet.xml"of the file. The springMVC in the configuration file on it.

2. Simplified configuration SpringMVC

SpringMVC configuration can be abbreviated , which requires increased schema constraint, then use <mvc:annotation-driven />the 处理器映射器and 处理器适配器merge.
Further, the use of prefix and suffix view resolver mating processor may also be such that more standardized Java code.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop.xsd 
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx.xsd
		http://www.springframework.org/schema/mvc
		http://www.springframework.org/schema/mvc/spring-mvc.xsd ">
	
	<!-- 处理器(手写) -->
	<context:component-scan base-package="com.gql.springmvc02"></context:component-scan>
	
	<!-- 代替处理器映射器和处理器适配器 -->
	<mvc:annotation-driven />
 
	<!-- 视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!-- 
			prefix	前缀
			suffix	后缀
			物理视图地址 = prefix + 逻辑视图名(handler的返回值) + suffix 
		 -->
		<property name="prefix" value="/WEB-INF/user/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
</beans>